72002221800 has 96 divisors (see below), whose sum is σ = 226350780480. Its totient is φ = 18930150400.

The previous prime is 72002221793. The next prime is 72002221817. The reversal of 72002221800 is 812220027.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 802497 + ... + 887696.

It is an arithmetic number, because the mean of its divisors is an integer number (2357820630).

Almost surely, 2^72002221800 is an apocalyptic number.

It is an amenable number.

72002221800 is an abundant number, since it is smaller than the sum of its proper divisors (154348558680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72002221800 is a wasteful number, since it uses less digits than its factorization.

72002221800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690283 (or 1690274 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

Adding to 72002221800 its reverse (812220027), we get a palindrome (72814441827).

The spelling of 72002221800 in words is "seventy-two billion, two million, two hundred twenty-one thousand, eight hundred".